03507nam a2200433 4500 20260817163132.0 090698 th eng .b10092547 AIT Thesis no. WA-89-05 Hsieh, Kuo-miao Appropriate spacing between aeration grooves on curvature spillway channel Bangkok : Asian Institute of Technology, 1989 95 p. + 1 online resource Thesis ; no. WA-89-5 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology, 1989 Cavitation erosion occurring on the surface of the hydraulic structure is ca used by the surface irregularities, subjected to high velocity and high head flow down the channel, the cavitation damage is prone to happen. To prevent this damage, the installation of aeration device on the spillway channel has been proven to be successful and economical. In the present study, experiments have been carried out on two models of steep slope rectangular spillway channel with vertically constant radius curved profile in downstream. The investigation of the effective length has been performed on these two models with some ae ration devices having various shape parameters of square groove with deflector type and different flow conditions. The results obtained from this study can be used as a reference to deter mine the effective length between aeration grooves on the curvature spillway channel with the groove installed at the tangential point. Due to the radius of curvature spillway channel is constant the results obtained from this study can be utilized conditionally. An attempt is also made to investigate the sensitivity of the ratio of the effective length to the water depth resulted from shifting the location of aeration groove 50 cm up stream of the tangential point. It is found that there is no relevant relationship between the ratio of the effective length to the water depth and relating parameters. Spillways Preecha Kamronrithisorn, Chairperson Prida Thimakorn, Examination committee Suphat Vongvisessomjai, Examination Committee The Government of the Republic of China, Scholarship donor Asian Institute of Technology. Thesis ; no. WA-89-5 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B17844 .b10092547 mnait s 240411 2 951012 m a s 0 mnait mnait mnarc mnait 20 40 Barcode : 30050003053476 CREATED : 1994-05-16 RECORD # : i10099864 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050003053484 CREATED : 1994-05-16 RECORD # : i10099876 LPATRON : 1012703 LCHKIN : 2003-01-11 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050160034236 CREATED : 2016-12-02 RECORD # : i12880851 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050121098072 CREATED : 2023-11-10 RECORD # : i1346811x LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 7523 7523 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-89-05 30050003053476 2026-08-17 16:31:32 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 10.00 0 AIT Thesis no. WA-89-05 30050003053484 2026-08-17 16:31:32 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. WA-89-05 30050160034236 2026-08-17 16:31:32 2026-08-17 40 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. WA-89-05 30050121098072 2026-08-17 16:31:32 3 2026-08-17 20